体表胃电活动的检测方法

<正> 胃肠平滑肌电活动的研究已近80年的历史随着弱电流放大技术的改进,这项研究有了迅速发展。但迄今为止,国内外尚缺乏一种性能稳定可靠的胃肠电专用生理放大仪,有关体表胃电快波的引导和放大技术尚未彻底解决。为此,我室和南京大学信息物理系,经过二年的试验性研究,研制了一台新型的NUV-3型低噪声光电隔离胃电放大器(简称NUV-3胃电放大器),并建立了一套动物及人体胃电活动的检测方法,现报道如下: 方法 (一)电极的制作胃电的引导电极,目前多采用银片和银

RECORD OF GASTROELECTROGRAM(GEG) FROM THE SURFACE OF THE BODY

This paper reports the results of fast and slow wave of GEG recorded from the surface of the body using a NUV gastroelectrical amplifier which was made by our laborafory recently. The experiments were performed in 59 normal human adults, 20 rabbits and 2 dogs. The results are as follows: In fasting condition, the slow ware was dominant, the frequency was 3 cycle/min in human, 3.5 cycle/min in rabbit and 5 cydle/min in dog; but only a few fast waves discharged. After eation, the amplitude and frequency of the fast wave increased si- gnificantly. In addition, we found that the result of GEG was influenced by mang factors, among which the recording and amplifying techniques ane of great impertance.